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Document and Entity Information (USD $)
In Thousands, except Share data, unless otherwise specified
 12 Months Ended
Dec. 31, 2014
Mar. 16, 2015
Jun. 30, 2014
Document And Entity Information [Abstract]      
Document Type 10-K    
Amendment Flag false    
Document Period End Date Dec. 31, 2014    
Document Fiscal Year Focus 2014    
Document Fiscal Period Focus FY    
Trading Symbol AETI    
Entity Registrant Name American Electric Technologies Inc    
Entity Central Index Key 0001043186    
Current Fiscal Year End Date --12-31    
Entity Well-known Seasoned Issuer No    
Entity Voluntary Filers No    
Entity Current Reporting Status Yes    
Entity Filer Category Smaller Reporting Company    
Entity Public Float     $ 33,870dei_EntityPublicFloat
Entity Common Stock, Shares Outstanding   8,216,598dei_EntityCommonStockSharesOutstanding